Job Work under GST
Why sending your own goods to someone else's factory doesn't always trigger tax the way a sale does
Imagine dropping off your own fabric at a tailor to be stitched into a shirt. You are not selling the fabric to the tailor, and the tailor is not selling you a shirt from their own stock, you remain the owner of the material throughout, and you simply pay a service fee for the stitching. India's Goods and Services Tax law has a specific, formally defined category for exactly this kind of arrangement, called job work.
Under GST, job work refers to any treatment or process undertaken by one person on goods that belong to a different registered person. The critical tax consequence is that sending goods to a job worker for processing is not treated as a taxable supply requiring GST at that point, since ownership of the goods never actually changes hands, only their physical location and condition does. GST becomes payable only on the job work service fee itself, and separately, if applicable, when the finished goods are eventually sold to an actual buyer.
This distinction matters enormously for cash flow in industries that rely heavily on outsourced processing, textiles, auto components, and toll and contract manufacturing more broadly, since it avoids the goods being taxed twice, once notionally at the point of moving them to a processor and again at final sale, and avoids tying up working capital in GST paid on an internal, non-sale movement of goods.
The law does impose real conditions to prevent misuse, the principal manufacturer sending the goods must bring them back, or have them supplied directly from the job worker's premises, within specified time limits, and remains responsible for accounting for those goods throughout the process, since the tax authorities still need a clear paper trail even though no sale has technically occurred.
Whenever a manufacturing company's supply chain involves goods moving between its own facility and an outsourced processor without a formal sale being recorded at each step, job work provisions under GST are almost always the specific legal mechanism making that tax-efficient, ownership-retained movement possible.